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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 12 — Jun. 15, 2009
  • pp: 1909–1911

Leaky waveguide modes along the edge of a dielectric wedge

Tobias Maletzky, Kazuo Tanaka, Thierry Grosjean, and Ulrich C. Fischer  »View Author Affiliations


Optics Letters, Vol. 34, Issue 12, pp. 1909-1911 (2009)
http://dx.doi.org/10.1364/OL.34.001909


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Abstract

It is shown experimentally that a Gaussian beam focused from within a finite wedge onto its edge at an angle of total reflection excites a leaky waveguide mode propagating along the edge. This newly described phenomenon is interpreted in terms of waveguide modes of a tapered dielectric slab of a mode index, which is known to decrease with slab thickness. This decrease in the refractive index leads to a gradual refraction of the incident beam parallel to the edge. A numerical simulation of a focused Gaussian beam incident on a finite dielectric wedge gives a full account of this phenomenon.

© 2009 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.2790) Integrated optics : Guided waves
(230.0230) Optical devices : Optical devices
(230.7370) Optical devices : Waveguides
(230.7400) Optical devices : Waveguides, slab
(130.2755) Integrated optics : Glass waveguides

ToC Category:
Optical Devices

History
Original Manuscript: March 17, 2009
Revised Manuscript: May 11, 2009
Manuscript Accepted: May 12, 2009
Published: June 12, 2009

Citation
Tobias Maletzky, Kazuo Tanaka, Thierry Grosjean, and Ulrich C. Fischer, "Leaky waveguide modes along the edge of a dielectric wedge," Opt. Lett. 34, 1909-1911 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-12-1909


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References

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